Heater.



No. 768,720. PATENTED AUG. 80, 1904.

J. R. BARKER. HEATER.

APPLICATION FILED NOV. 24. 1902.

1550 MODEL. 4 SHEETS-SHEET 1.

69. 2 60M QM 09660 a- 1: egg

No. 768,720. PATENTED AUG. 30, 1904. J. R. BARKER. HEATER.

\ 1 APPLICATION FILED NOV. 24. 1902.

N0 MODEL. 4 SHEETS-SHEET 2.

w tnesses! I Z;70e n io 6'.

No. 768,720. 7 PATENTED AUG. 30, 1904. J. R. BARKER.

HEATER.

APPLICATION FILED NOV. 24, 1902.

N0 MODEL. 4 SHEETS-SHEET 3.

No. 768,720. PATENTED AUG. 30, 1904. J. R. BARKER.

HEATER;

APPLICATION FILED NOV. 24, 1902. N0 MODEL. 4 SHEETS-SHEET 4.

Patented August 30, 1904.

JOHN R. BARKER, OF CHICAGO, ILLINOIS.

HEATER.

SPECIFICATION forming part of Letters Patent No. 768,720, dated August30, 1904. A li ti fil d November 24', 1902. Serial No. 132,681. (Nomodel.)

To all whom, it may concern.-

Be it known that I, JOHN R. BARKER, a citi- Zen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Heaters; and I do hereby'declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to a novel construction in a heater, the objectbeing to provide a heater combiningin one apparatus an air-heatingfurnace and a water-heater; and it consists in the features ofconstruction and combinations of parts hereinafter fully described andclaimed.

In the accompanying drawings, illustrating my invention, Figure 1 is acentral vertical section of a heater constructed in accordance with myinvention. Fig. 2 is a transverse section of same on the line 2 2 ofFig. 1. Fig. 3 is a transverse section on the line 3 3 of Fig. 1. Fig. 4is a transverse section on the line a 4 of Fig. 1. Fig. 5 is atransverse section on the line 5 5 of Fig. 1. Fig. 6'is a centrallongitudinal section of a water-drum interposed in the fire-pot. Fig. 7is atransverse section of same on the line 7 7 of Fig. 6.

In said drawings, A indicates the fire-pot, B the grate, and O theash-pit. The said firepot A is practically egg-shaped and consists of alower section D and an upper section E. The said lower section D isprovided at its upper end with an annular water-chamber F, and saidupper section E is provided at the dome with a water-chamber G, which iseX- tended downwardly at three points, forming three arms or branches Hof said chamber G, each of said branches H being connected at its lowerend with said chamber F by means of a pipe I, which enters said chamberF at its upper edge. Connected with said chamber G and dependingtherefrom by means of a pipe J is a water-drum K, having an annularwater-charnber L and a central flue M. Said pipe J, which is connectedwith the upper end of said chamber L, serves as both an inlet and anoutlet to said chamber. A branch pipe Nconnects the upper end portion ofsaid pipe J with the lower end of said waterchamber L and serves to aidthe circulation of the water through same. The water heated in saidvarious Water-chambers passes upwardly throughthe pipe O to radiatorssuitably placed and returns to the chamber F through the return-pipe P,which enters said chamber F near its lower edge. The said firepot A issuitably mounted in a cylindrical casing Q, which is adapted to receiveair at its lower end through the air-inlets Q, which by contact with theheated surfaces within said casing' becomes heated and is distributed tovarious parts of a building through the fiues R,

leaving said casing at its upper end. In order to afford the largestpossible area ofheating-surfaces within said casing and absorb as muchas possible of the heat of the fire, I have provided an annularsmoke-flue S above said fire-pot, which is connected with the latter bythree fines T, which alternate with the branches H of said chamber G.The said smoke-flue S is connected, by means of a plurality of verticalflues U, with a lower annular smoke-flue V, surrounding the fire-potjust above the grate. Flues W connect each of said annular smoke-fines Sand V with a pipe X, leading to the chimney, said upper flue IV beingprovided with a damper Y. At the point where said two sections D and Eof said fire-pot A are joined the section E is provided with an annularchamber or flue E, which is extended outwardly at one point and thereconnects with a downwardly-extending pipe E through which air is fed tosaid chamber E. The said chamber E is connected with the interior of thefire-pot A by means of the perforations E. In feeding the fire the freshcoal is primarily freed of gas, and such gas cannot burn unless a freshsupply of air is introduced above the fire to supply enough oxygen topermit combustion. The air thus fed through said perforations E causethe generated gases to burn instead of passing out of the chimney, sothat no part of the fuel is wasted. Between the dome of the fire-pot andthe annular smoke-flue S are three air-passages Z, through which part ofthe air passes, the remainder passing through the annular space Zbetween said smoke-flue S and the casing Q.

in order to prevent the too rapid passage of the air, the saidsmoke-flue S is provided at its upper end with an annular flange Z,between which and the casing Q! is a very small annular space and whichis provided with perforations. The said flange is obviously a cond uctorof heat which is absorbed by the passing air and serves, further, toresist the passage of such air, thereby causing the major portion to bedeflected through the passages Z. The lire-pot A is provided with anexterior radiating flange lll' similar to the flange Z", just above saidwater-chamber F, said flange E being perforated to provide additionalradiating-surface. The air in passing through said casing Q is thusbrought into direct con tact with the walls of the ash-pit and lire-potand the walls of the annular and vertical smokeflues, thus absorbing thegreatest possible amount of heat and utilizing the heat of the tire tothe greatest possible extent. In order to supply to such air a healthydegree of moisture, I provide a water-pan A around said ash-pit (l,which is filled with water through the spout V, which is evaporated andcarried by the air to the various rooms of the building. The doubleconnection of the waterchaniber L of said druin K with the pipe J ismade to prevent the water in said drum from beingexhausted by rapidgeneration of steam, such double connection serving to permit rapidcirculation.

1 claim as my invention" 1. in a heater, the combination with thelire-pot, and a water-chamber in the dome thereof, of a water-d rum insaid lire-pot, a pipe connecting the upper end of said drum with thewater-chaml; er in said dome, a second pipe connecting the lower end ofsaid drum with said first-named pipe, and connection between saidwater-chamber in said dome and radiators through which the water heatedin said dome and. drum is adapted to circulate.

2. in a heater, the combination with the lire-pot, an annular smoke-tineabove the same, lines connecting the same with said firepot, an annularsmoke-flue surrounding said lire-pot at its lower end, vertical linesconnecting said annular smoke-Hues, connection between said sn1ole-fiues and a chimney, passages between the dome of the lire-pot and theupper annular smoke-flue, a circun1feren t ial perforated flange on saidupper annular smoke-flue, a concentric casing surrmnnling said lire-potand smoke-Hues, air-inlets at the lower end of said casing, hot-airtines leading from the upper end of said casing to the various parts ofthe building, the air entering said casing being adapted to come incontact with the hot surfaces of said lire-pots and smoke-tines andabsorb heat therefrom, a water-jacket in the dome oi saidlire-pot,awater drum in said lire-pot, a pipe connecting the upper endof said drum with the watercham her in said donie, a second pipeconnecting the lower end of said drum with the first-mentioned pipe andconnection between said waterchamber in said dome and radiators throughwhich the water heated in said. dome and drum is adapted to circulate,substantially as described.

3. in a heater, the combination with a casing, a lire-pot therein, sinoleiiues within said casing connected with said lire-pot and with achimney, air-passages between said smoketlues and said lire-pot,air-inlets at the lower end of said casing, and hot-air fines leadingfrom the upper end of said casing to various parts of the buildii'ig, ofwater-chambers in the walls of said lirepot,a water-jacket in the domeof said fire-pot, connections between said waterchambers in the walls ofsaid tire-pot and said water-jacket in the dome of said lire-pot tocause circulation from one to the other, a water-drum in said lire-pot,a pipe connecting the upper end of said druni with the waterchamber insaiddome, a second pipe connecting the lower end of said drum with thelirstmentioned pipe and connections between said water-chambers and.radiators through which the heated water is adapted to circulate.

In testimony whereof I a'flix my signature in presence of two witnesses.

JOHN R. BARKER.

\Vitnesses:

RUDOLPH l/VM. Lo'rz, ARTHUR A. LOTZ.

